/Engine/Source/Runtime/Engine/Classes/Materials/MaterialExpressionComposite.h
+---------+--------+---------+
class UMaterialExpressionComposite : public [UMaterialExpression](API\Runtime\Engine\Materials\UMaterialExpression)
TObjectPtr<UMa...
InputExpressions
TObjectPtr<UMa...
OutputExpressions
FString
SubgraphName